parkr

#
# Jekyll Generator for SCSS
#
# (File paths in this description relative to jekyll project root directory)
# Place this file in ./_plugins
# Place .scss files in ./_scss
# Compiles .scss files in ./_scss to .css files in whatever directory you indicated in your config
# Config file placed in ./_sass/config.rb
#

inter-coder

HTMLElement.prototype.isVisible = function(){
	function getPositionTop(element){
		var offset = 0;
		while(element) {offset += element["offsetTop"];element = element.offsetParent;}
		return offset;
	}
    var posTop = getPositionTop(this);
    var posBottom = posTop + this.offsetHeight;
    var visibleTop = (document.documentElement && document.documentElement.scrollTop) || document.body.scrollTop;
    var visibleBottom = visibleTop + document.body.offsetHeight;